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This study explored bird diversity, seasonal variation, and associated factors along an elevational gradient in an important biodiversity area (IBA) of central Nepal: the Kaligandaki River basin of Annapurna Conservation Area. The field survey was carried out in 2019 over two seasons, winter (January and February) and summer (May and June) using the point count method. A total of 90 sampling plots were set up from elevations of 800m (Beni) to 3,800m (Muktinath). Data for variables including the number of fruiting trees (indicator of resource availability) and distance to the road (indicator of disturbance) were collected, and their influence on avian diversity were assessed. The results revealed a diverse assemblage of avian fauna in the study area with consistent species richness over the two seasons. A decline in species richness and diversity with increasing elevation was observed. Of the different habitat types within the study area, forest and shrubland habitats showed the strongest association with bird species distribution and richness. We emphasize the need for long-term monitoring programs with standardized sampling approaches to better understand the avifauna in the central Himalaya.
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Acharya, B.K., N.J. Sanders, L. Vijayan & B. Chettri (2011). Elevational gradients in bird diversity in the Eastern Himalaya: An evaluation of distribution patterns and their underlying mechanisms. PLoS ONE 6(12): e29097. https://doi.org/10.1371/journal.pone.0029097 DOI: https://doi.org/10.1371/journal.pone.0029097
Adhikari, J.N., B.P. Bhattarai & T.B. Thapa (2019). Factors affecting diversity and distribution of threatened birds in Chitwan National Park, Nepal. Journal of Threatened Taxa 11(5): 13511–13522. https://doi.org/10.11609/jott.4126.96.36.19911-13522 DOI: https://doi.org/10.11609/jott.4188.8.131.5211-13522
Avery, M.L. & C.V. Riper (1989). Seasonal changes in bird communities of the Chaparral and Blue- Oak Woodlands in central California. The Condor 91(2): 288–295.
Baral, R. (2018). Birds of Annapurna Conservation Area. National Trust for Nature Conservation, Annapurna Conservation Area Project, Pokhara, Nepal, 74pp.
Basnet, T.B., M.B. Rokaya, B.P. Bhattarai & Z. Münzbergová (2016). Heterogeneous landscapes on steep slopes at low altitudes as hotspots of bird diversity in a Hilly Region of Nepal in the Central Himalayas. PLoS ONE 11(3): e0150498. https://doi.org/10.1371/journal.pone.0150498 DOI: https://doi.org/10.1371/journal.pone.0150498
Becker, A., C. Körner, J.J. Brun, A. Guisan & U. Tappeiner (2007). Ecological and land use studies along elevational gradients. Mountain Research and Development 27: 58–65. https://doi.org/10.1659/0276-4741(2007)27[58:EALUSA]2.0.CO;2
Bertuzzo, E., F. Carrara, L. Mari, F. Altermatt, I. Rodriguez-iturbe & A. Rinaldo (2016). Geomorphic controls on elevational gradients of species richness. Proceedings of the National Academy of Sciences 113: 1737–1742. https://doi.org/10.1073/pnas.1518922113 DOI: https://doi.org/10.1073/pnas.1518922113
Bhattarai, K.R. & O.R. Vetaas (2006). Can Rapoport’s rule explain tree species richness along the Himalayan elevation gradient, Nepal? Diversity and Distribution 12: 373–378. DOI: https://doi.org/10.1111/j.1366-9516.2006.00244.x
BCN (2019). Bird Conservation Nepal (BCN): Important bird and biodiversity areas of Nepal (IBAs). http://www.birdlifenepal.org/birds/important-birds-areas. Accessed on 28 December 2019.
Blake, J. & B. Loiselle (2000). Diversity of birds along an elevational gradient in the Cordillera Central, Costa Rica. Ornithological Advances 117: 663–686. https://doi.org/10.1642/0004-8038(2000)117[0663:DOBAAE]2.0.CO;2
Brotons, L. & S. Herrando (2001). Reduced bird occurrence in pine forest fragments associated with road proximity in a Mediterranean agricultural area. Landscape and Urban Planning 57: 77–89. https://doi.org/10.1016/S0169-2046(01)00191-8 DOI: https://doi.org/10.1016/S0169-2046(01)00191-8
Burnham K.P. & D.R. Anderson (2002). Model selection and multimodel inference: a practical information-theoretic approach. Springer, 454pp+XXVI. https://doi.org/10.1007/b97636 DOI: https://doi.org/10.1007/b97636
Burton, N.H.K., M.J.S. Armitage, A.J. Musgrove & M.M. Rehfisch (2002). Impacts of man-made landscape features on numbers of estuarine water birds at low tide. Environmental Management 30: 857–864. https://doi.org/10.1007/s00267-002-2732-5 DOI: https://doi.org/10.1007/s00267-002-2732-5
Chen, Z., K. He, F. Cheng, L. Khanal & X.L. Jiang (2017). Patterns and underlying mechanisms of non-volant small mammal richness along two contrasting mountain slopes in southwestern China. Scientific Reports 7(1): 13277. https://doi.org/10.1038/s41598-017-13637-0 DOI: https://doi.org/10.1038/s41598-017-13637-0
Chen, Z., X. Li, W. Song, Q. Li, K. Onditi, L. Khanal & X.L. Jiang (2020). Small mammal species richness and turnover along elevational gradient in Yulong Mountain, Yunnan, Southwest China. Ecology and Evolution. https://doi.org/10.1002/ece3.6083 DOI: https://doi.org/10.1002/ece3.6083
Collins, A.N. & A.O. Edward (2014). Environmental determinants influencing seasonal variations of bird diversity and abundance in wetlands, northern region (Ghana). International Journal of Zoology 3: e548401. https://doi.org/10.1155/2014/548401 DOI: https://doi.org/10.1155/2014/548401
Colwell, R.K. & D.C. Lees (2000). The mid-domain effect: geometric constraints on the geography of species richness. Trends in Ecology and Evolution 15: 70–76. https://doi.org/10.1016/S0169-5347(99)01767-X DOI: https://doi.org/10.1016/S0169-5347(99)01767-X
Colwell, R.K., C. Rahbek & N.J. Gotelli (2004). The mid-domain effect and species richness patterns: what have we learned so far? American Naturalist 163(3): E1–E23. https://doi.org/10.1086/382056 DOI: https://doi.org/10.1086/382056
de Roder, F. (1989). The migration of raptors south of Annapurna, Nepal, autumn 1985. Forktail 4: 9–17.
Ding, Z., J. Liang, Y. Hu, Z. Zhou, H. Sun, L. Liu, H. Liu, H. Hu & X. Si (2019). Different responses of avian feeding to spatial and environmental factors across an elevation gradient in the central Himalaya. Ecology and Evolution 9(7): 4116–4128. https://doi.org/10.1002/ece3.5040 DOI: https://doi.org/10.1002/ece3.5040
Douglas, D., D. Nalwanga, R. Katebaka, P.W. Atkinson, D.E. Pomeroy & D. Nkuutu (2014). The importance of native trees for forest bird conservation in tropical farmland. Animal Conservation 17(3): e12087. https://doi.org/10.1111/acv.12087 DOI: https://doi.org/10.1111/acv.12087
Fahrig, L. & T. Rytwinski (2009). Effects of roads on animal abundance: empirical review and synthesis. Ecology and Society 14(1): 21. http://www.ecologyandsociety.org/vol14/iss1/art21.
Ferger, S.W., M. Schleuning, A. Hemp, K.M. Howell & K. Böhning-Gaese (2014). Food resources and vegetation structure mediate climatic effects on species richness of birds. Global Ecology and Biogeography 23: 541–549. https://doi.org/10.1111/geb.12151 DOI: https://doi.org/10.1111/geb.12151
Fuller, R.J., D.E. Chamberlain, N.H.K Burton & S.J. Gough (2001). Distributions of birds in lowland agricultural landscapes of England and Wales, how distinctive are bird communities of hedgerows and woodland? Agriculture, Ecosystems and Environment 84: 79–92. https://doi.org/10.1016/S0167-8809(00)00194-8 DOI: https://doi.org/10.1016/S0167-8809(00)00194-8
Gaston, K.J., T.M. Blackburn, J.D. Greenwood, R.D. Greroryx, R.M. Quinn & J.H. Lawton (2000). Abundance-occupancy relationships. Journal of Applied Ecology 37:39–59. https://doi.org/10.1046/j.1365-2664.2000.00485.x DOI: https://doi.org/10.1046/j.1365-2664.2000.00485.x
Griffith, E.H., J.R. Sauer & A.J. Royle (2010). Traffic effects on bird counts on
Grimmett, R., C. Inskipp, T. Inskipp & H.S. Baral (2016). Birds of Nepal, Helm Field Guide. Revised edition, Christopher Helm, London.
Grytnes, J.A. & O.R. Vetaas (2002). Species richness and altitude: A comparison between null models and interpolated plant species richness along the Himalayan altitudinal gradient Nepal. American Naturalist 159: 294–304. https://doi.org/10.1086/338542 DOI: https://doi.org/10.1086/338542
Hu, Y., Z. Ding, Z. Jiang, Q. Quan, K. Guo, L. Tian, H. Hu & L. Gibson (2018). Birds in the Himalayas: what drives beta diversity patterns along an elevational gradient? Ecology and Evolution 8: 11704–11716. https://doi.org/10.1002/ece3.4622 DOI: https://doi.org/10.1002/ece3.4622
Hurlbert, A.H. & J.P. Haskell (2003). The effect of energy and seasonality on avian species richness and community composition. American Naturalist 161: 83–97. https://doi.org/10.1086/345459 DOI: https://doi.org/10.1086/345459
IUCN (2018). The IUCN Red List of Threatened Species. Version 2017-3. www.iucnredlist.org. Accessed on 23 December 2019.
Inskipp, C. & T. Inskipp (2003). Bird conservation priorities of the Annapurna Conservation Area. Report to UNEP-WCMC/King Mahendra Trust for Nature Conservation/Annapurna Conservation Area Project.
Inskipp, C., H.S. Baral, S. Phuyal, T.R. Bhatt, M. Khatiwada & T. Inskipp (2016). The Status of Nepal’s Birds: The National Red List Series. Zoological Society of London, UK, 678pp.
Inskipp. C., H.S. Baral, T. Inskipp & A. Stattersfield (2013). The state of Nepal birds 2010. Journal of Threatened Taxa 5(1): 3473–3503. https://doi.org/10.11609/JoTT.o3276.933 DOI: https://doi.org/10.11609/JoTT.o3276.933
Joshi, K. & D. Bhat (2015). Avian species distribution along elevation at Doon valley (foothills of western Himalayas), Utarakhand, and its association with vegetation structure. Journal of Asia-Pacific Biodiversity 8(2): 158–167. https://doi.org/10.1016/j.japb.2015.04.002 DOI: https://doi.org/10.1016/j.japb.2015.04.002
Katuwal, H.B., N.M.B. Pradhan, J.J. Thakuri, K.P. Bhusal, P.C. Aryal & I. Thapa (2018). Effect of Urbanization and Seasonality in Bird Communities of Kathmandu Valley, Nepal. Proceedings of Zoological Society 71: 103–113. https://doi.org/10.1007/s12595-018-0265-z DOI: https://doi.org/10.1007/s12595-018-0265-z
Korner, C. (2007). The use of ‘altitude’ in ecological research. Trends in Ecology and Evolution 22: 569–574. https://doi.org/10.1016/j.tree.2007.09.006 DOI: https://doi.org/10.1016/j.tree.2007.09.006
Lee, P. & J. Rotenberry (2005). Relationships between bird species and tree species assemblages in forested habitats of eastern North America. Journal of Biogeography 32: 1139–1150. https://doi.org/10.1111/j.1365-2699.2005.01254.x DOI: https://doi.org/10.1111/j.1365-2699.2005.01254.x
Lomolino, M. (2001). Elevation gradients of species diversity: Historical and prospective views. Global Ecology and Biogeography 10: 3–13. https://doi.org/10.1046/j.1466822x.2001.00229.x
MacArthur, R. H., J.W. MacArthur & J. Preer (1962). On bird species diversity. II. Prediction of bird census from habitat measurements. The American Naturalist 96: 167–174. https://doi.org/10.1086/282219 DOI: https://doi.org/10.1086/282219
MacArthur, R.H., H. Recher & M.L. Cody (1966). On the relation between habitat selection and species diversity. American Naturalist 100: 319–332. https://doi.org/10.1086/282425 DOI: https://doi.org/10.1086/282425
McCain, C.M. (2004). The mid-domain effect applied to elevational gradients: species richness of small mammals in Costa Rica. Journal of Biogeography 31(1): 19–31. https://doi.org/10.1046/j.0305-0270.2003.00992.x DOI: https://doi.org/10.1046/j.0305-0270.2003.00992.x
McCain, C.M. (2009). Global analysis of bird elevational diversity. Global Ecology and Biogeography 18(3): 346–360. https://doi.org/10.1111/j.1466-8238.2008.00443.x DOI: https://doi.org/10.1111/j.1466-8238.2008.00443.x
McCain, C.M. (2010). Global analysis of reptile elevational diversity. Global Ecology and Biogeography 19: 541–553. https://doi.org/10.1111/j.1466-8238.2010.00528.x DOI: https://doi.org/10.1111/j.1466-8238.2010.00528.x
Mengesha, G. & A. Bekele (2008). Diversity and relative abundance of birds of Alatish National Park, North Gondar, Ethiopia. International Journal of Ecology and Environmental Sciences 34(2): 215–222.
Mishra, B., M.S. Babel & N.K. Tripathi (2014). Analysis of climatic variability and snow cover in the Kaligandaki River basin, Himalaya, Nepal. Theoretical and Applied Climatology 116(4): 681–694. https://doi.org/10.1007/s00704-013-0966-1 DOI: https://doi.org/10.1007/s00704-013-0966-1
Moning, C. & J. Müller (2008). Environmental key factors and their thresholds for the avifauna of temperate montane forests. Forest Ecology and Management 256: 1198–1208. https://doi.org/10.1016/j.foreco.2008.06.018 DOI: https://doi.org/10.1016/j.foreco.2008.06.018
Morrison, M.L. (1992). Bird abundance of forests managed for timber and wildlife resources. Biological Conservation 60: 127–134. https://doi.org/10.1016/0006-3207(92)91163-M DOI: https://doi.org/10.1016/0006-3207(92)91163-M
Neupane, J., L. Khanal & M.K. Chalise (2020). Avian diversity in Kaligandaki River basin, Annapurna Conservation Area, Nepal. International Journal of Ecology and Environmental Sciences 46(2): 99–110.
Palomino, D. & L.M. Carrascal (2007). Threshold distances to nearby cities and roads influence the bird community of a mosaic landscape. Biological Conservation 140: 100–109. https://doi.org/10.1016/j.biocon.2007.07.029 DOI: https://doi.org/10.1016/j.biocon.2007.07.029
Pan, X.Y., Z.F. Ding, Y.M. Hu, J.C. Liang, Y.J. Wu & X.F. Si (2016). Elevational pattern of bird species richness and its causes along a central Himalaya gradient, China. PeerJ 4: e2636. https://doi.org/10.7717/peerj.2636 DOI: https://doi.org/10.7717/peerj.2636
Pandey, N., L. Khanal & M.K. Chalise (2020). Correlates of avifaunal diversity along the elevational gradient of Mardi Himal in Annapurna Conservation Area, Central Nepal. Avian Research 11(1): 31. https://doi.org/10.1186/s40657-020-00217-6 DOI: https://doi.org/10.1186/s40657-020-00217-6
Peris, S.J. & M. Pescador (2004). Effects of traffic noise on passerine populations in Mediterranean wooded pastures. Applied Acoustics 65: 357–366. https://doi.org/10.1016/j.apacoust.2003.10.005 DOI: https://doi.org/10.1016/j.apacoust.2003.10.005
Pidgeon, A.M., V. Radeloff, C.H. Flather, C.A. Lepczyk, M. Clayton, T. Hawbaker & R.B. Hammer (2007). Associations of forest bird species richness with housing and landscape patterns across the USA. Ecological applications 17: 1989–2010. https://doi.org/10.1890/06-1489.1 DOI: https://doi.org/10.1890/06-1489.1
Pigot, A.L., C.H. Trisos & J.A. Tobias (2016). Functional traits reveal the expansion and packing of ecological niche space underlying an elevational diversity gradient in passerine birds. Proceeding of Royal Society of Biology 283: 20152013. https://doi.org/10.1098/rspb.2015.2013 DOI: https://doi.org/10.1098/rspb.2015.2013
Pocock, Z. & R.E. Lawrence (2005). How far into a forest does the effect of a road extend? Defining road edge effect in eucalypt forests of south-eastern Australia, pp. 397–405. In: Irwin, C.L., P. Garrett & K.P. McDermott (eds.), Proceedings of the 2005 International Conference on Ecology and Transportation.
Price, T.D., D.M. Hooper, C.D. Buchanan, U.S. Johansson, D.T. Tietze, P. Alström, U. Olsson, M. Ghosh-Harihar, F. Ishtiaq, S.K. Gupta, J. Martens, B. Harr, P. Singh & D. Mohan (2014). Niche filling slows the diversification of Himalayan songbirds. Nature 509: 222–225. https://doi.org/10.1038/nature13272 DOI: https://doi.org/10.1038/nature13272
R Core Team. (2013). R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. URL: http://www.R-project.org/
Rahbek, C. (1995). The elevational gradient of species richness: a uniform pattern? Ecography 18(2): 200–205. https://doi.org/10.1111/j.1600-0587.1995.tb00341.x DOI: https://doi.org/10.1111/j.1600-0587.1995.tb00341.x
Rahbek, C. (2005). The role of spatial scale and the perception of largescale species-richness patterns. Ecology Letters 8: 224–239. https://doi.org/10.1111/j.1461-0248.2004.00701.x DOI: https://doi.org/10.1111/j.1461-0248.2004.00701.x
Raman, T.R.S., N.V. Joshi & R. Sukumar (2005). Tropical rainforest bird community structure in relation to altitude, tree species composition and null models in the Western Ghats, India. Journal of the Bombay Natural History Society 102(2): 145–157.
Renner, S.C. (2011). Bird Species-Richness Pattern in the Greater Himalayan Mountains-A General Introduction. Ornithological Monographs 70: 1–9. https://doi.org/10.1525/om.2011.70.1.1 DOI: https://doi.org/10.1525/om.2011.70.1.1
Reijnen, R., R. Foppen, C.T. Braak & J. Thissen (1995). The effects of car traffic on breeding bird populations in woodland. III Reduction of density in relation to the proximity of main roads. Journal of Applied Ecology 32: 187–202. https://doi.org/10.2307/2404428 DOI: https://doi.org/10.2307/2404428
Rheindt, F.E. (2003). The impacts of roads on birds: does song frequency play a role in determining susceptibility to noise pollution? Journal of Ornithology 144: 295–306. https://doi.org/10.1007/BF02465629 DOI: https://doi.org/10.1007/BF02465629
Sanders, N.J. & C. Rahbek (2012). The patterns and causes of elevational diversity gradients. Ecography 35: 1–3. https://doi.org/10.1111/j.1600-0587.2011.07338.x DOI: https://doi.org/10.1111/j.1600-0587.2011.07338.x
Santhakumar, B., P.R. Arun, R.K. Sony, M. Murugesan & C. Ramesh (2018). The pattern of bird distribution along the elevation gradient of the Sutlej River basin, western Himalaya, India. Journal of Threatened Taxa 10 (13): 12715–12725. https://doi.org/10.11609/jott.39184.108.40.20615-12725 DOI: https://doi.org/10.11609/jott.39220.127.116.1115-12725
Santillan, V., M. Quitian, B.A. Tinoco, E. Zarate, M. Schleuning, K. Bohning- Gaese & E.L. Neuschulz (2018). Spatio-temporal variation in bird assemblages is associated with fluctuations in temperature and precipitation along a tropical elevational gradient. PloS ONE 13(5): e0196179. https://doi.org/10.1371/journal.pone.0196179 DOI: https://doi.org/10.1371/journal.pone.0196179
Shannon, C.E. & W. Weaver (1949). The mathematical theory of communication. The University of Illinois Press, Urbana, 117pp.
Stevens, G.C. (1992). The elevational gradient in altitudinal range: An extension of Rapoport’s latitudinal rule to altitude. The American Naturalist 140: 893–911. https://doi.org/10.1086/285447 DOI: https://doi.org/10.1086/285447
Stratford, J. & C. Sekercioglu (2015). Birds in forest ecosystems, pp. 281–296. In: Corlett, R., K. Peh & Y. Bergeron (eds.). Handbook of Forest Ecology. Routeledge Press, 640pp.
Strong, A. & T. Sherry (2000). Habitat-specific effects of food abundance on the condition of Ovenbirds in Jamaica. Journal of Animal Ecology 69: 883–895. https://doi.org/10.1046/j.1365-2656.2000.00447.x DOI: https://doi.org/10.1046/j.1365-2656.2000.00447.x
Sutherland, W.J. (2006). Ecological Census Techniques: Hand book 2nd ed. Cambridge University Press: 324 pp. DOI: https://doi.org/10.1017/CBO9780511790508
Waterhouse, F.L., M.H. Mather & D. Scip (2002). Distribution and abundance of bird relative to elevation and biogeoclimatic zones in coastal old-growth forests in Southern British Columbia. Journal of Ecosystem and Management 2(2): 1–14.
Wu, Y.J., R.K. Colwell, C. Rahbek, C.L. Zhang, Q. Quan, C.K. Wang & F.M. Lei (2013). Explaining the species richness of birds along an elevational gradient in the subtropical Hengduan Mountains. Journal of Biogeography 40: 2310–2323. https://doi.org/10.1111/jbi.12177 DOI: https://doi.org/10.1111/jbi.12177
Xingcheng, H., W. Xiaoyi, D. Shane, H.R. Andrew, A. Per & R. Jianghong ( 2019). Elevational patterns of bird species richness on the eastern slope of Mt. Gongaa, Sichuan Province, China. Avian Research 10(1): s40657. https://doi.org/10.1186/s40657-018-0140-7 DOI: https://doi.org/10.1186/s40657-018-0140-7
Xie, S., F. Lu, L. Cao & W. Zhou (2016). Multi-scale factors influencing the characteristics of avian communities in urban parks across Beijing during the breeding seasons. Scientific Reports 6: e29350. https://doi.org/10.1038/srep29350 DOI: https://doi.org/10.1038/srep29350